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Normally open design exhausts air from the air springs when pilot pressure is applied to the control port
Direct replacement for Mack 25MF436A
4570920001
Low oil level with no other visible external leaks
Alliance ABPN320188641 Air Spring – Kenworth Peterbilt | Replaces W01-358-8864 Exterior Normally open design exhausts airThe Alliance ABPN320188641 is a rolling lobe drive axle air spring for Kenworth and Peterbilt trucks running low leaf suspensions, replacing Firestone W01 358 8864 and Paccar C81 1011 C81 1013. The bellows is rated for 7,070 lb at 100 psi service pressure with a 16" design height, 9" top plate, and zinc coated hardware. Peterbilt 03 08716 supersedes the older 03 07887 (4 2004). Signs You Need a New Drive Axle Air Spring Truck riding lower on one
